Fascinating! Where I come from, it's frankly unheard of to even consider wielding more than one weapon at once.

[He is legitimately kicking himself for not thinking of this sooner. Like, say, all those times Threepwood managed to weasel out of being killed by him. Argh! Wait, what was he doing again? Oh right.]

I imagine it would make insult swordfighting very cumbersome, though...